基于DSP+FPGA的实时信号采集系统设计与实现

Design and Implementation of Real Time Signal Acquisition System Based on DSP+FPGA

摘要:

为了提高对实时信号采集的准确性和无偏性,提出一种基于DSP+FPGA的实时信号采集系统设计方案。系统采用4个换能器基阵并联组成信号采集阵列单元,对采集的原始信号通过模拟信号预处理机进行放大滤波处理,采用TMS32010DSP芯片作为信号处理器核心芯片实现实时信号采集和处理,包括信号频谱分析和目标信息模拟,由DSP控制D/A转换器进行数/模转换,通过FPGA实现数据存储,在PC机上实时显示采样数据和DSP处理结果；通过仿真实验进行性能测试,结果表明,该信号采集系统能有效实现实时信号采集和处理,抗干扰能力较强。

Abstract:

In order to improve the accuracy and bias of real-time signal acquisition, a real-time signal acquisition system based on DSP+FPGA is proposed. The system adopts 4 transducer array to build parallel array signal acquisition unit, the original signal acquisition amplification filtering through analog signal pretreatment, using TMS32010DSP chip as the core of signal processor chip to realize real-time signal acquisition and processing, including the signal spectrum analysis and target information simulation, controlled by DSP D/A converter DAC, through the realization of FPGA data storage, real-time display on the PC and DSP sampling data processing results. The performance of the system is tested by simulation. The results show that the signal acquisition system can effectively realize the real-time signal acquisition and processing, the anti-interference ability is strong.